DOI QR코드

DOI QR Code

Cyclic loading test of abnormal joints in SRC frame-bent main building structure

  • Wang, Bo (School of Civil Engineering, Chang'an University) ;
  • Cao, Guorong (School of Civil Engineering, Chang'an University) ;
  • Yang, Ke (School of Civil Engineering, Chang'an University) ;
  • Dai, Huijuan (School of Civil Engineering, Xi'an University of Science and Technology) ;
  • Qin, Chaogang (School of Civil Engineering, Chang'an University)
  • Received : 2019.12.12
  • Accepted : 2021.03.22
  • Published : 2021.04.25

Abstract

Due to functional requirements, SRC column-RC beam abnormal joints with characteristics of strong beam weak column, variable column section, unequal beam height and staggered height exist in the Steel reinforced concrete (SRC) frame-bent main building structure of thermal power plant (TPP). This paper presents the experimental results of these abnormal joints through cyclic loading tests on five specimens with scaling factor of 1/5. The staggered height and whether adding H-shaped steel in beam or not were changing parameters of specimens. The failure patterns, bearing capacity, energy dissipation and ductile performance were analyzed. In addition, the stress mechanism of the abnormal joint was discussed based on the diagonal strut model. The research results showed that the abnormal exterior joints occurred shear failure and column end hinge flexural failure; reducing beam height through adding H-shaped steel in the beam of abnormal exterior joint could improve the crack resistance and ductility; the abnormal interior joints with different staggered heights occurred column ends flexural failure; the joint with larger staggered height had the higher bearing capacity and stiffness, but lower ductility. The concrete compression strut mechanism is still applicable to the abnormal joints in TPP, but it is affected by the abnormal characteristics.

Keywords

References

  1. Buyuktaskin, A.H.A. (2017), "A study on the comparison of a steel building with braced frames and with RC walls", Earthq. Struct., 12(3), 263-270. https://doi.org/10.12989/eas.2017.12.3.263.
  2. Garcia, R., Sullivan, T.J. and Corte, G.D. (2010), "Development of a displacement-based design 435 method for steel frame-RC wall buildings", J. Earthq. Eng., 14(2), 252-277. https://doi.org/10.1080/13632460902995138.
  3. GB 50011-2010 (2016), Code for Seismic Design of Buildings, Ministry of Housing and Urban-Rural Development of the People's Republic of China; Beijing, China. (In Chinese)
  4. Goel, S.C. (2004), "United States-Japan cooperative earthquake engineering research program on composite and hybrid structures", J. Struct. Eng., 130(2), 157-158. https://doi.org/10.1061/(ASCE)07339445(2004)130:2(157).
  5. Grzeszykowski, B. and Szmigiera, E. (2017), "Ductility assessment of two-chord composite steel-concrete battened columns", Struct. Infrastruct. Eng., 13(11), 1414-1424. https://doi.org/10.1080/15732479.2017.1281970.
  6. Imai, K., Yoshida, Y., Saijo, M., Watanabe, T. and Hirano, M. (1991), "An experimental report on elasto-plastics behaviors of beam-to-column connections with an offset in right and left beam positions", J. Struct. Construct. Eng., 425, 27-35.
  7. Jamnani, H.H., Amiri, J.V. and Rajabnejad, H. (2018), "Energy distribution in RC shear wall-frame structures subject to repeated earthquakes", Soil Dyn. Earthq. Eng., 107, 116-128. https://doi.org/10.1016/j.soildyn.2018.01.010.
  8. JGJ 138-2016 (2016), Design Specification for Composite Structures, Ministry of Housing and Urban-Rural Development of the People's Republic of China; Beijing, China.
  9. Kuwahara, S., Kumano, T. and Inoue, K. (2000), "The elasto-plastic behavior of joint panels at the connection of rectangular steel column and two H-shaped beams with different depth", J. Struct. Constr. Eng., 65, 175-181. https://doi.org/10.3130/aijs.65.175_4.
  10. Li, B.Y., Yang, Y.L., Chen, Y., Cheng, W. and Zhang, L.B. (2018), "Behavior of connections between square CFST columns and H-section steel beams", J. Constr. Steel Res., 145, 10-27. https://doi.org/10.1016/j.jcsr.2018.02.005.
  11. Matsuo, S., Oyamada, T. and Ozono, M. (2013), "Elasto-plastic behavior of offset beam-to-column connection panels with exterior diaphragms", Proceedings of the 7th International Structural Engineering and Construction Conference: New Developments in Structural Engineering and Construction, Honolulu, United States, Jun.
  12. Pan, P., Lam, A., Lin, X.C., Li, Y.X. and Ye, L.P. (2013), "Cyclic loading tests and finite element analysis on performance of ring beam connections", Eng. Struct., 56, 682-690. https://doi.org/10.1016/j.engstruct.2013.05.033.
  13. Pan, P., Liu, X.C., Lam, A., Chen, H.W. and Ye, L.P. (2014), "Monotonic loading tests of ring-beam connections for steel reinforced concrete columns and RC beams", J. Struct. Eng., 140(4). https://doi:0.1061/(asce)st.1943-541x.0000911. https://doi.org/10.1061/(asce)st.1943-541x.0000911
  14. Park, R. (1989), "Evaluation of ductility of structures and structural assemblages from laboratory testing", Bull. New Zealand Soc. Earthq. Eng., 22(3), 155-166. https://doi.org/10.5459/bnzsee.22.3.155-166.
  15. Paulay T., Park R. and Preistley M.J.N. (1978), "Reinforced concrete beam-column joints under seismic actions", ACI J., 75(11), 585-593.
  16. Paulay, T. (1989), "Equilibrium criteria for reinforced concrete beam-column joints", ACI Struct. J., 86(6), 635-643.
  17. Tsai, M.H., Zhang, J.F, Song, Y.P. and Lu, J.K. (2018), "Dynamic performance of a composite building structure under seismic ground motions", Earthq. Struct., 15(2), 179-191. https://doi.org/10.12989/eas.2018.15.2.179.
  18. Wang, B., Bai, G.L., Liu, L. and Dai, H.J. (2014), "Elastic-plastic seismic response and anti-seismic lines of SRC frame-bent hybrid structure", J. Vib. Shock, 33(05), 46-52,81.
  19. Wang, B., Dai, H.J., Bai, Y.T. and Xiao, K. (2019), "Influence mechanism of steel diagonal braces on mechanical behavior of steel Truss-RC tubular column hybrid structure", J. Earthq. Eng. https://doi:10.1080/13632469.2019.1605317.
  20. Wang, B., Wu, T., Dai, H.J., Bai, G.L. and Wu, J. (2019), "Pseudo-dynamic and cyclic loading tests on a steel-concrete vertical hybrid structure", Earthq. Struct., 17(4), 399-409. https://doi.org/10.12989/eas.2019.17.4.399.
  21. Wang, B., Yang, K., Dai, H.J., Bai, G.L. and Qin, C.G. (2020), "Seismic analysis of RC tubular columns in air-cooled supporting structure of TPP", Earthq. Struct., 18(5), 581-598. http://dx.doi.org/10.12989/eas.2020.18.5.581
  22. Yuan, B., Zeng, M.H. and Ma, K.J. (2012), "Crack Resistance Capacity Analysis of SRC Column-RC Beam Node", Appl. Mech. Mater., 204-208, 2994-3001. https://doi.org/10.4028/www.scientific.net/amm.204208.2994.
  23. Zhang, J. and Jia, J.Q. (2016), "Experimental study on seismic behavior of composite frame consisting of SRC beams and SRUHSC columns subjected to cyclic loading", Construct. Build. Mater., 125, 1055-1065. https://doi.org/10.1016/j.conbuildmat.2016.08.157.